Radial Spherical Plain Bearings processing method for inner and outer rings

- Feb 22, 2019-

The structure of the radial joint bearing is simpler than that of the rolling bearing, and is mainly composed of an inner ring having an outer spherical surface and an outer ring having an inner spherical surface. Generally used for low-speed oscillating motion, since the sliding surface is spherical, it can also be tilted within a certain angle range, and can still work normally when the support shaft and the shaft hole have different degrees of centering.


Self-lubricating radial spherical plain bearings have inner and outer rings, and the inner surface of the outer ring and the outer surface of the inner ring are generally spherical. Generally, a slotted outer ring radial joint bearing and a processing method thereof are generally used. The bearing is composed of an outer ring, an inner ring and a sealing ring, and the inner and outer rings are all made of carburized steel, and both have a soft core and an outer surface. hard.


The outer ring of the radial joint bearing adopts the double slit type. Firstly, a tapping hole is drilled in the symmetrical position of the outer ring of the bearing outer ring, and then the two arcing arcs are respectively milled along the tapping hole to the end faces, and the outer ring is subjected to surface carburizing. Heat treatment, so that the surface of the outer ring includes two tapping holes and the surface hardness of the arc is 54HRC´Ż×62HRC. Then, using the conventional slitting process, the outer ring of the bearing can be split along the section of the tapping hole and the position of the arc. Two semicircular outer rings, and the cracks are neat and tidy.